Analysis of the Six Steps for Adjusting Hydraulic Brakes by Brake Manufacturers: Hydraulic brakes are one of the most important components in vehicles. Whenever there is a problem with the brakes, we need to promptly handle it. After replacing the brake friction pads, remaking the brake drum, or disassembling the brake base plate, the gap between the friction pads and the brake drum must be readjusted. The steps are as follows: 1) Remove the inspection hole cover on the brake drum, Loosen the fixing nut of the brake shoe support pin and the nut of the camshaft bracket fastening bolt. 2) Rotate the shoe support pin with the markings on the two pin ends facing inward. 3) By repeatedly twisting the screw shaft of the brake shoe support pin and adjusting arm, the brake friction plate and brake drum are fully fitted. At the adjusted position, slowly tighten the fastening nut of the bracket and the locking nut of the automatic shoe support pin to maintain the position of the brake shoe support pin unchanged (it is possible to press and hold the brake pedal to tighten all the bolts and nuts that have been adjusted on it, provided that the air pressure meets the regulations). 4) Loosen the worm shaft by 1/2-2/3 turns, and the brake drum should be able to rotate freely without colliding with the brake friction plate or other parts. The clearance position between the brake friction plate and the automatic drum: at the brake shoe support pin end, it is 0.25-0.40mm, and at the cam end, it is 0.40-0.55mm. The difference in clearance between the two shoes at the same end should not exceed 0.1mm. 5) After the adjustment is completed, compressed air is introduced into the brake chamber, and the stroke of the push rod should be 25-40mm. The rear wheel automatically adjusts the small worm shaft of the arm, and the stroke of the push rod changes by 5mm with each movement, while the front wheel is 4mm. 6) When the stroke of the push rod exceeds 40mm due to wear of the friction plate, local adjustment can be made (at this time, do not twist the support pin to avoid damaging the original good contact state). The method is to face the worm head of the adjustment arm, tighten the screw clockwise at two places on the front wheel (clearance decreases), loosen counterclockwise (clearance increases), tighten counterclockwise at two places on the rear wheel, and loosen clockwise. Attention, do not use the method of twisting the brake chamber push rod to change the ratio of the push rod for "adjustment". By adjusting through the six steps of appeal, we can ensure that the hydraulic brake performance on our vehicle meets the standard and ensure our safety during driving.